Hello dolci,
I am sorry to hear that you are having an issue with printing full documents. I would like to help you and would also like to target the problem some more. This could be an issue with the program you are printing from or the printer driver itself.
Could you please try printing your document from another program and let me know if you are able to successfully print the entire document?
If the problem is with one specific program, let me know which program you are printing from and which operating system you have.
In the meantime, you can run The Print and Scan Doctor if you are running a Windows OS only.
Hope to hear back from you soon! :)